Knock-off mechanism for slubbers and roving frames



June 23, 1931. J. c. NUNNALLY 1,811,404

KNOCK-OFF MECHANISM FOR SLUBBERS AND ROVING FRAMES Filed March 20. 19303 Sheets-Sheet l June 23, 1931. .1. c. NUNNALLY 1,811,404

KNOCK-OFF MECHANISM FOR SLUBBERS AND ROVING FRAMES Filed March 20, 19303 Sheets-Sheet 2 June 23, 1931. Q NUNNALLY 1,811,404

KNOCK-OFF MECHANISM FOR SLUBBERS AND ROVING FRAMES Filed March 20, 19502g Sheets-Sheet 3 HHIHIIIHHIHIIIIHHI?? H IH l :E

HIIHHIII lll Patented June 23, 1931 Y UNITED S-"lUf-i'TESV PATENT OFFICEl JAMEIS Iil'UNNALLY,'OF GREER, SCUTI- CAROLINA KNCK-OIF MC'HANISM FORSL'UBIBERS AND ROVING FRAMES l Application led March 20, 1930. SerialNo. 437,408.

` This invention relates to stop motions or knocking oilq and eliminateany attention knock-eliv motions of, slubbers or kindred by theoperator. y v

machines, as for instance roving frames, A further object is to providea construcly frames and the like, and particularly tion of thischaracter which will not require e to certain improvements upon theconstruc- Watching, but merely require thatthe atten- 50 tion"illustrated in my application for patent dant shall dol when the deviceknocks off.

filed February 23,1 1929, Serial No. 342,142. Other objects Will appearin the course As was stated in this prior application, of the followingdescription.

at the present, asl far` as known to me, all My invention is illustratedin the accomroving fr almes are doffed by the rackV knockpanyingdrawings, Whereinr 55 off motion which is shifted or changed each Figure1 is a rear elevation ofa portion time that the ten-sionl gear isadjusted and, of a slubber or roving frame with my knocktherefore', whenthe yarn orroving gets slack oil mechanism applied thereto; y in dampWeather or tightens up in dry Figure 2 is an elevation of the knock-ofWeather, theY operative has to change the lever Support, the'oscillating arm beingin 60 Vtension and these adjustments change thesection; v l

rack-knockeoi' motion. vrThis change in the Figure 3l is a section onthe line 3 3 rack knock-'oii motion Will aiect the yard- Of Figure 2;age"l oit' stock on the bobbins, making it im- F ignre 4 is an elevationof the hook sup- 0 possible t'o keep the @reeling all run out port, thebobbin rail being shown in sec- 65 together, thus causing a- Waste ofstock at OII.;

reach creeling. v Figure 5 is a section on the line 5 5 of The generalobject of the present inven- Figure 4;

tio@ is thesme as: in lily prior application Figure 6 1S El Sid@elQValOIl Of lille WOIU.

y 25 fOr Paten@ that is, tov avoid thel diliiculties `Wheel and Worm,the crank arm being shown 70 above. referred to andL cause the knock-oliin SCtOn. e

to occur. by the use of mechanism dri-ven dil'gure 7 is a Afragmentaryrear elevation reetly from theeontact shatter the slubber, as in Figurel, but Showing the Parts in which contact shaft inv all machines knownPOShl'lOP .b @fOlG @he M Cl has been shifted to meis driven'independently of the tension t0 mltml 1905551011 H1 Ol'del t0 doll; 75motionv andZ thus doingawaywith the diiii- Flgm'e 8 15.21 fragmentary1'1931 @levltlon Cteg due, to u Changing Gf be 1m odoff showing certainof the parts Wnenthe latch mechanism each time that the ten-Sion vis hasbeen fully retracted and the knock-oi changed and? thus giving evenyardage on rocl 11,111), Sllltefl' I 1 i 80 so V`V y-'fi ,y -v `1 L c1 i1 leere tultluelfpegrte a slubber frame, as Will be necessary for an d,b e f l t. ,f ,f t1. ,A t. t understanding of my invention. mme num er 0revo u lons fo le con a@ In these drawings, 10 deslgnates the usual I Y,Y y p v. troll beam andy 11 the sampsons supporting 85 A fufthef, andWOT? Patcula' Oblect 0f the same. The shipper rod is designated 12theprSen-t' IIIVGDIOH 1S t0 PTOVlClB IIGChand is operatively connectedtoy a knock-off nism-` which will not require the services of arm orlever 13 of the usual character pivotan opera-tor in order to secureutheknock-olf ed at 14 upon the roll beam lOand extended a L5 oi' theslubber, but Wil-l ilo the Work of llongitudinally as at 15 and tlm/iiiIdownward, 9

this portion of the arm being of such weight that as soon as this end ofthe arm is unsupported, it will drop and knock off the'frame. The topcone is designated 16 and is driven as usual from twist gear4 train, thebelt 18 being shiftable overthe faces of the cones 16 and 17 to changethe speed by means of the usual rack 19 actuated in the usual manner bymechanism which it is not necessary to show as it is well known. Thecontact shaft 2O as usual carries the mutilated beveled gear wheel 21engaging the beveled gear wheel 22'on top cone shaft 23 sothat thus theContact shaft receives its motion from the top cone shaft which in turnre-v ceives its motion from the twist train driven 1n the usual manner.So farvI have describred elements which are commonly found in tiontherewith is an extension shaft 24 carrypose will be now described.

ing at its upper end the beveled gear wheel 25,l and mounted insupportsn 26 is a 4shaft 27-carrying upon it the gear 25a and worm- 28.One of the supports 26 has a bracket 29 carrying the worm l-wheel 30.Loosely mounted upon the shaft 30fL of the worm wheel is the crank arm31 having the crank pin 32. Carried by the pin 32 is the rod 33.

lOne wheel 30 is providedl with a laterally projecting pin 34. The crankarm 31 is disposed in the path of movement of this pin. The worm wheel30 rotates in a 'counter-clockwise direction.

During the rotation of this worm wheel, the pin 34 will engage the arm31, which is loose upon the shaft 30?, as before stated, when this arm31 isin a depending position and will carry the arm 31 up in acounterclockwise direction -tov a position where the arm 31 extendsupward. Upon a further movementof the wormA wheel, the ,arm 31 will becarried up beyond its vertical positionand will then ofits own weightswing downward van'd forward ina counter-clockwise direction of itself,and 'remain in this position until pin 34 has again picked it up. Sofar, I lhavefdescribed.the construction which-is shown in fmy pendingapplication for patent, Serial No. 342,142,filed February 23, 1929, towhich reference has been previouslymade. i

rIn this prior application, I showed a depending swinging latch whichwas, disposed beneath theknock-off lever l13 and supported the same,this latch beingv shifted laterally and-out of itssupporting position bythe rod 33. The improved mechanism for this pur- Pivotally mounted uponthev rail 10 at 35 i jisav depending support designated 'generally 36designed to normally support'the weighted end of the lever 13.v Thissupport 36 extends straight downward from the pivot 35,

Vthen extends at right angles orrearward toat 38, the lower portion ofthis portion 38 having its outerl 'face slightly curved at 37 a. Theportion 38 is formed to provide a shoulder 39 vand toprovide a latchreceiving recess or chamber 40 below this shoulder. Disposed within thischamber is a latch 41 which is mounted upon a transverse shaft 42. Thisshaft extends laterally outward toward the front of the machine andcarries upon its end the weighted arm 43. c

This arm at one vend is enlarged so as to provide a weight 44 and theother end of the arm is formed with a pivotal section 45 pivoted at 46.The rear end of the section 46 is forked to `embrace anv ear on theextremity of the main section of the arm 43 and the confronting endfaces of the main section 43 ofthe pivoted section 44 are so formed asis obvious from Figure 3, that while the section 45 ymay readily swingupward, it cannot swing downward beyond a position of alinement withthe-main section 43. The rod 33 is formed at its'extremitywith asomewhat elongated loop'or eye 47-which surrounds and loosely embracesthe ,shaft 42 so that the rod 33 has longitudinal play before strikingthe pin 42 which constitutes the-shaft upon which the arm-43V and thelatch 41 are mounted.

Attached to the usual carriage rail 49 is anV angular member 48. This is`rigidly engaged with a .vertically extending plate 50 notched at itsends as at 50 to straddle and engage with a guide bar on the sampsonpost 11. The rail 49 is commonly found in slub- 'bers and supports allthe bobbin bolsters on which the spindles or bobbins rotate'. Thesebolsters vary in number. from fifty-six to one hundred and seventy-six.This rail is traversed up and down by the usualilifting motion on theframe.

Mounted upon the plate 50 is an angular member 52, this angular memberhaving a slot 53 through which'it-is bolted as at 54 to plate`50 Theopposite end of this angu- .lar member carries a bolt 55 which passesthrough` a slot 56 in an extension piece 57 Ywhich at its upper endisformed with a hook v58. It is this hook that is adapted to engage over:the finger 45 at the extremity of the arm 43.

It will be obvious that this member composed ofthe sections 52 and 57 isadjustable. When the carriage'orrail 49 moves downward to permit thebobbins to be slots in the sections 52 and 57 permits the hook 58 to beshifted toward or from the rear of the slubber to make it properly en-Vlength of the slot in the eye 4'7.

gage with the knuckle end of the arm 43. The slot 56 is particularlydesigned tol make itV possible to adjust this hook 58 to lsuit thelength of bobbins which may be 111/2, 91/2 andSl/Z' inches in length. Inmy prior con-- structiomd'escribed in my application, Serial No.342,142, filed on the 23rd day of February,1929, the knock-offV occurredat the lower end of bobbins whe-re it was not possible to doif the frameas the operative had to run the fra-me half way of its traverse in orderto dof-f. Now with my present construction, the knock-off lever drops onto the face off the latch at the change of traverse and holds the weightuntil half of the length of the bobbins has been made whereupon thelatch is rotated out from beneath the knock-off arm 15 or lever, thusstopping the frame at theproper doifing place. of bobbin, makingall-dofls the same.

Itf toA bev understood and as described in my prior application, thatthe contact shaft andi the bevelgear 25 will make a large number ofrevolutions before t-he worm gear 391wi-ll have` made one completerevolution. As the worm gear starts its revolutions at the.4 beginningof the bobbin lli'ng operation, the arm 31 will be in `a dependingposition, and Y when the' pin 34 strikes the arm 31 in the rotation ofthe worm Wheel, the arm 31 will be retracted or moved Vtoward the rightin Figure 1 and thenafter the arm 31 has reached its hori- Zontalposition and? is moving upward and laterally toward thev left, the rod33- will be shifted forward.

p This forward movement of the rod 33will not affect Ytheswingingsupport 36 until the Y arm 33` has movedy a distance equal to theGenerally speaking, when the worm wheel' 30 has made a Vcompleterevolution, the rod 33 will be forced` outward and the support 36 willlutions during the lling of the bobbins and before the dofting thereof,as for instance, seventy-twol half i revolutions. or thirty-six fullvrevolutions for 11 x 51/2 slubbers while for ,intermediatev frames, thecontact shaft vmakes seventy-twohalf revolutions or thirtysix completerevolutions to oney revolutionof the. worm gear 30.

he pin.34 actsito swing this armv 31 over "its center and at thistime,.the end of the eye 47 strikes the pin 42 andA swings the supportI36 just enoughto permit the lower end of the lever 13 tov drop from theshouider 39 upon-which the endA of-this-lever 13 initially rested ontothe upper face of the latch 41, as shown. in Figure 1.

The swinging of the supporting arm 36 toward the left in Figure 1 willswing the left hand end of the member into a position beneath the hook53. Upon a downward movement of the hook 53 caused by the last downwardmovement of the rod, the arm 43 will be turned in a counter-clockwisedirection which will turn the latch 41 in a counter-clockwise direction,releasing the lower end of the arm 13 and allowing` this arm, therefore,to drop the full distance necessary to knock oft1 the loom.

Then the frame is dotted, the heavy end 44 of the arm 43 swings thelatch 41 back into position for the next doif. The purpose of theknuckle or pivoted section 45 is to prevent any trouble when the arm 13makes the first drop from shoulder 39 on to the upper face of the latch41. It is to be understood that the loop 47 at the extremity of the rodv33 is to permit the arm 31 to make one complete revolution with the wormgear and yet only move the dependingr pivoted supporting arm 36 aboutthreeeighths of an inch when it reaches the extremity of the loop. Viththis construction, the mechanism does all the work of knocking ofi theroving frame so that the operator does not have to give the frame anyattention whatsoever, but the mechanism completes the whole operation ofknocking oftn so that the operator does not have to do anything exceptdoti the bobbins whereas with my old construction, the operator wasobliged to watch the machine.

It may be stated with regard to Figure 1 that in the drawings I haveshown the arm 31 and the pin 34 as if they were disposed on the rearside of the wheel 30 and the bracket 29 is disposed on the front side ofthe wheel 30, that is, toward the front of the machine.- This has beenillustrated in this. wayto make the operation of the device clear, butas an actual fact, the bracket 29 will extend downward on the rear ofthe wheel 30 and the arm 31, the pin 34 and the rod 33 will all bedisposed on the front side of the wheel 30. n

lVith the mechanism so far as described, the arm 31, when it reaches ahorizontal position extending toward` the support 36, the innerextremity of the eye 47 will strike the pin 42 and force the pivotedsupport 36 laterally a distance just suiiicient to permit the extremityof the arm 15 to drop from the should 39 on to the latch 41.

Then upon a downward movement of the bobbin rail 49, the latch 41 aspreviously described will be retracted, allowing the angular end of thelever 15 to drop still further or across the front of the latch. Thiswill preventthe supportv 36 from swinging toward the right in Figure 1,.but if the knock-offlever be lifted by the operator Vor in ,otherwords, if the rod 12 be'A shifted by the operator toward the left inFigure 1, this willV act-to lift the arm 15 and as thefarm 15'is lifted,the support 36 will swing slightly toward the right so that the shoulder39 will again engage beneath the knock-off lever 15. In other words, theoperator by a very slight movement of the part 12-can again reset theknock-off arm lever 15 immediately afterv doi'iing orvimmediately afterthe knock-off lever has fallen olf the shoulder 39 on to the latch 411.In orderto prevent the support 36 from swinging back into a positionwhere the knock-off lever may rest upon the shoulder 39, until the rack19 is shifted back by the operator to its starting point as is necessaryduring the doliing operation, I provide a rest designated 59 which ismounted upon the extremity of the rack 19. 'This rest is mounted upon anangular bracket 60and the rest kis somewhat elongatedrin the directionof the rod 19.

Mounted upon the connecting -rod 33 is a finger 61 which extends outwardand down- Ward relative -to the V.connecting rod and.

when the rack 19 has reached the position at the extremeleft of itstravel, this rest 59 will be disposed in a position such that when thearm y31 is in a horizontal plane and pointed ytoward the support 36, thelin'- ger 61 will bear upon this rest 59. `This supports the arm 31 androd 33 from any further movement until the rack 19 has been `shifted bythe operator back to its initial port 36 swung toward the left in suchposition that the knock-o lever 15 cannot by any` possibility rest uponthe shoulder 39.

The operator. cannot,therefore, hold the weighted knock-offv lever 15 uppermanently.

He may shift the rod 12 momentarily but assoon as he releasse it, thearm 15 will drop Vdownjbeyond the shoulder 39 land the operatork cannotyagain engage the knock-ofi' lever v13 andthe shoulder 39 until-he windskthe rack bacl'to the startingpoint for the new doff. YWithout thismeansfor stopping lthe downwardV movementof the ,arm

31 and the rod 33, the operator couldk pull back on rod 12 andholdtheknock-off mechanism out of operation by engaging the arm 15 withshoulder .39. Thus the bobbins would' continue to run and fill beyondthe allotted amount. This isentirely prevented 'by the mechanism which Ihave. disclosed.

1. In a stop motion for Vwinding machines, the winding machine includingavertically reciprocatable Vbobbin rail, a shipper lever forming part,of the` stop motion, a swingable member normally supporting Vtheshipper lever in a raised position, a latch carried by the swingablemember and normallyprojecting therefrom, means actuated from the drivingmechanism of the winding machine acting after a predetermined time fromthe start of said driving mechanism to release the direct vengagement of'the member with the lever and permit the lever to drop upon said latch,and means actuated upon a downward movement of the bobbin rail toretract the latch.l Y

2. In a stop motion for winding machines, the'winding machine includinga vertically reciprocatablebobbin rail, a gravity actuated shipper leverforming part of the stop motion, a shiftablev'member normally supportingthe shipper member ina raised position, a latch carriedy by theswingable member and normally ,projecting therefrom, means actuated fromthe driving mechanism of the winding machine acting after apredetermined time from the beginning of a winding operation to swingthe member in a direction to release the direct engagement of the memberwith-thc lever and permit the lever to drop upon said latch, and meansactuated upon a downward movement of the bobbin rail, retracting saidlatch to permit the full descent ofthe shipper lever, the means thenacting to return the latch to its lll) normal position when the bobbinrail' is .permitan initial slight downward movement of the shipperlever, and means actuated upon a downward movement lof the'bobbin railto entirely release said supporting member from the lever to permit vthelever to Vfully drop and stop the machine.V

1. In a stop motion for winding machines, i

the winding machineincluding a vertically reciprocatable bobbin rail, avertically movable shipper lever,- means normally holding one end of theshipper lever raised, means Yactuated from the 'driving' mechanism ofthe winding machine acting` after aV predetermined length of time fromthe start of'said driving mechanism to partially release the shipperlever, Yand means then actingupon a downward movement of the b obbinrail to entirely release the shipper lever.

5. In a stop motion for winding machines,

the winding machine including a vertically reciprocatable bobbin railand a contact shaft, a gravity actuated shipper lever, a shiftablesupport therefor normally supporting the shipper lever in a raisedposition, a latch carried by the support, means actuated by said Contactshaft to swing said member from beneath the lever and permit the leverto drop upon said latch, a shaft upon which the latch is mounted, acounter-weighted lever mounted upon said shaft, a member engaging saidlever opposite its counterweight, and operatively engaged to move Withthe bobbin railfwhereby as said bobbin rail moves downward, the latchwill be rotated to release position to release its engagement with theshipper lever and to permit the shipper lever to drop a distancesuflicient to cause the knock-,off of the machine.

6. In a stop motion for winding machines, the winding machine includinga vertically reciprocatable bobbin rail, a shipper lever adapted to moveby gravity to a knock-olf position, a Y swingable support having ashoulder upon which the lower end of the shipper lever is supported andcarrying a latch normally projected in a position just beneath saidshoulder, a shaft mounted on the member and upon which said latch ismounted for oscillation, a counter-weighted lever mounted upon saidshaft, a vertically reciprocatable hook-shaped member operativelyengaged with the bobbin carrying rail to move therewith, and so disposedwith relation to the unweighted end of the lever that when the pivotedsupporting member swings toward the hook-shaped member, the free end ofthe counter-weighted lever will be ycarried beneath the bill of thehook-shaped member, a rotatable element, a rod connected to therotatable element yto be reciprocated thereby, and having slidingengagement with said shaft for a predetermined distance upon a movementof the rod in one direction and then acting to shift the pivoted memberin a direction to release the shipper lever and permit it to drop uponthe latch, and means actuated by the driving mechanism of the windingmachine acting to completely rotate said rotatable member after lapredetermined time from the starting of the driving mechanism.

7 In a winding machine, a vertically reciprocatable bobbin rail, vaknock-olf lever having a vertically movable portion descending to stopthema-chine, a pivoted support having a shoulder normally supporting theknock-off lever in a raised position and having a retractable latchdisposed immediately below the shoulder, a counter-weighted arm mountedto shift with said latch, the counter-weight of the arm acting toproject the latch, said arm when tilted against its counter-weightacting to retract the latch, a vertically reciprocatable member havingyits extremity ,normally disposed above the extremity o fY the arm,vsaid member having operative connection to the bobbin rail of thewinding machine to be reciprocated thereby, a contact shaft having abeveled gear thereon, a longitudinally extending shaft driven from thebeveled gear and carrying a worm, a worm wheel engaged by said Worm, theworm wheel having a laterally projecting pin, an arm loosely mountedupon the 'shaft' ofthe worm wheel and in the path of motion of said pin,a rod connected to the extremity of said anni and slidably connected tothe pivoted support for limited movement in one direction, said rodafter said limited movement acting to swing the supporting member tocarry its shoulder from beneath the shipper lever to permit the shipperlever to drop upon the latch.

8. In a stop motion for winding machines, the winding machine includinga vertically reciprocatable bobbin rail, a shipper lever forming part ofthe stop motion, and a belt shifting rack, a swingable member normallysupporting the shipper lever in a raised position, a latch carried bythe swingable member and normally projecting therefrom, means actuatedfrom the driving mechanism of the winding machine acting after apredetermined length of time from the start of said driving mechanism torelease the direct engagement of the member with the lever and permitthe lever to drop upon said latch, means actuated upon the downwardmovement of the bobbin rail to retract the latch to permit the fulldescent of the shipper lever, and means carried by the rack preventingthe swingable member from moving back into a posit-ion where it canengage said shipper lever when the latter is raised until the rack hasbeen shifted to its initial position.

9. In a winding mechanism, a vertically reciprocatable bobbin rail, abelt shifting rack, a knock-off lever having' a vertically movableportion acting to stop the machine when its descends, a support pivotedat its upper end and having a shoulder nor1nall 7 supporting theknock-ofi' lever in a raised position, a contact shaft having a beveledgear thereon, a longitudinally extending' shaft driven from the beveledgear and carrying a worm, a worm wheel engaged by said worm, the wormwheel having a laterally projecting pin, an arm loosely mounted upon theshaft of the worm wheel and in the path of motion of said pin, a rodconnected to the extremity of said arm and having an eye slidablyconnected to the pivoted support for limited movement in one direction,said rod after said limited movement acting to swing the supportingmember to carry its shoulder from beneath the shipper lever to permitthe shipper lever to drop upon the latch, and means preventing amovement of said rod in a direction away from the pivoted support untilthe rack is shifted to its initial position comprising a, finger mountedupon the rod'and a supporting member for said finger mounted upon therack and disposed in.V the path of down- Ward movement of saidingeruntil the rack has been shifted a distance toward its initial position.

lo In testimony whereof I hereunto aix my signature.

JAMES C. NUNNALLYm

